140 
Smith, of which no close ally has occurred in other localities 
may possibly be due merely to insufficient observation on 
my part, and, therefore, will not count for much ; while, on 
the other hand, the fact that the Vespidce and Crahronidce 
of Hawaii are so much more striking in appearance and 
specialized in structure than those of any other island is, I 
feel no doubt whatever, due genuinely to the Hymenopterous 
wealth of the island. 
AJSfTHOPHILA, 
ANDRENID^. 
In this family the indigenous species are not improbably 
confined to the genera MegacHle and Prosopis. Apis 
mellifica, Linn., is of course introduced, and it can hardly 
be thought likely that Xylocopa ceneipennis, He Geer, is a 
true native of the islands. It may fairly be questioned 
whether the destructiveness of the latter does not more 
than counterbalance the profitableness of the former. The 
habits of the single Hawaiian species of Megachile, noticed 
by me have been fully reported by Mr. F. Smith. The 
descriptions, &c., of the species of Prosopis found on the 
Archipelago are so scattered, and contains so many slight 
inaccuracies, that I think it might be well for me to review 
them seriatim, adding descriptions of certain additional 
species, and furnishing a table of their distinctive characters, 
as follows : — 
1.-~Prosopis fuscipennis. 
Prosopis fuscipennis, Smith, Proc. Lin. Soc., XIV., p. 682; 
Kirby, Ent. Mo. Mag., XVII., p. 85. 
I have nothing to add to the excellent description of this 
species in Mr. F. Smith’s two papers. I have never 
taken it elsewhere than on Oahu, and there only 
rarely. — T.B. 
2. — Prosopis satellus, sp. n. 
Niger; confertim punctatus; clypeo (antice rotundato), 
